A phospholipid microbubble comprising a shell which comprises a plurality of polyunsaturated fatty acid (“PUFA”)-containing phospholipids, and a core of inert gas surrounded by the shell comprising the plurality of PUFA-containing phospholipids. The present invention also provides methods of delivering a prophylactically or therapeutically effective amount of PUFA to an area of disease or injury in a subject. The present invention also provides methods of preventing or treating a disease in a subject using a prophylactically or therapeutically effective amount of the aforementioned phospholipid microbubbles.
